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Re: [Crash-utility] [PATCH v2 00/25] support hiding data of offline cpu



Hello Dave,

On 09/30/2014 11:21 PM, Dave Anderson wrote:
Regardless whether the cpu is online or not, the cpu's swapper task exists
and is always runnable, so the output is showing its legitimate state.  And
since no other task is queued on the cpu's run queue, then it's essentially
the "active" task on that cpu, waiting for it to come back online.  I'm not
sure why this is so bothersome to you?

It bothers me because ps shows swapper task on offline cpu and other active
tasks are in the same style. What I want is to show it is different. I wish
to distinguish the swapper task on offline cpu directly without having to
check which cpu is offline firstly.

I would like omitting ">" of idle task on offline cpu and adding "[OFFLINE]"
at the end of the line when "offline" set to "hide". And maybe you would like
adding "[OFFLINE]" at the end of those sleeping tasks of offline cpu as well.


I don't like the idea of "OF" in the state column, because that field shows
the contents of the task's "task_struct.state" member.  The command should
show what's in the kernel data structure, not some "made-up" state.


--
Regards
Qiao Nuohan


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